ASTROSAT CZTI

Data Quality Report

Orbit 20170909_A03_107T01_9000001530_level2

Creation date: 2017-10-21T22:43:10.578373
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A03_107T01_9000001530cztM0_level2.evt modeM0/AS1A03_107T01_9000001530cztM0_level2_quad_clean.evt
Size (bytes)3,242,208,960523,183,680
Size3.0 GB 498.9 MB
Events in quadrant A21,206,6003,300,373
Events in quadrant B27,552,0233,169,058
Events in quadrant C20,242,2913,300,556
Events in quadrant D26,229,9473,064,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0925340
B01100370
C0910280
D01060050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09180
B03120
C09250
D09190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A444375161.161195%
B4330021374.935335%
C444723750.843227%
D450358311.845231%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 54107 45632 49 49 0.09% 0.11%
B 54107 44513 1196 1196 2.21% 2.69%
C 54107 45616 2 2 0.00% 0.00%
D 54107 45475 389 389 0.72% 0.86%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 251 303471 280.04 5296 5198 1065.1
A 1 162 174965 159.39 5296 5198 1065.1
A 15 174 151143 137.02 5296 5198 1065.1
B 4 239 6588297 6804.88 5135 5015 967.4
B 11 51 284109 288.49 5135 5015 967.4
B 0 214 222414 224.72 5135 5015 967.4
C 4 175 50853 38.29 5162 5198 1192.3
C 14 234 42524 31.3 5162 5198 1192.3
C 13 61 38610 28.02 5162 5198 1192.3
D 8 195 2596465 2103.43 5122 4979 1232.0
D 1 52 2134548 1728.51 5122 4979 1232.0
D 2 16 1261349 1019.76 5122 4979 1232.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter